// Gradient menubar 
menubar.fillLayer(new Gradient(new Color("white"), new Color));

// Fill with desktop with Colored rect with same top left and bottom right colors 
var db = desktop.bounds;
var bltr = new Color;
var tl = new Color(0.15);
var br = new Color(0.4);
// Coloring clockwise from bottom left
desktop.coloredRect(db, bltr, tl, bltr, br);

var rnd = new Randomizer(0.1, 1);

// Green & blue Particles
var p1 = new Particles;
p1.velocityXRandomizer = new Randomizer(100, 300);
p1.velocityYRandomizer = new Randomizer(50, 80);
p1.accelerationXRandomizer = new Randomizer(-5, 5);
p1.accelerationYRandomizer = new Randomizer(-5, 5);
p1.maxParticles = 20;
p1.location = new Point(0, db.height * rnd.floatValue);
p1.gravity = new Point(0, -19);
p1.alphaDelta = 0.01;
p1.alphaDelay = 30;
p1.maxAge = 90;
p1.trailWidth = 4;

var c1 = new Color(0, 1, 0, 0.0);
var c2 = new Color(0.3, 0, 1, 0.0);
p1.addColor(c1.vary(0, 0.3, 0.3, 0.0));
p1.addColor(c2.vary(0.1, 0, 0.5, 0.0));

// Red and orange
var p2 = new Particles;
p2.velocityXRandomizer = new Randomizer(-5, 25);
p2.velocityYRandomizer = new Randomizer(20, 100);
p2.accelerationXRandomizer = new Randomizer(-10, 10);
p2.accelerationYRandomizer = new Randomizer(5, 10);
p2.maxParticles = 90;
p2.location = new Point(db.width * rnd.floatValue * 0.75, 0);
p2.gravity = new Point(0, -9);
p2.alphaDelta = -0.003;
p2.trailWidth = 2;

p2.addColor(new Color(1, 0, 0, 0.4));
var orange = new Color("orange");
orange.a = 0.3;
p2.addColor(orange);

// Gravity well
var randomXLoc = new Randomizer(500, db.width);
var randomYLoc = new Randomizer(200, db.height);
var loc = new Point(randomXLoc.floatValue, randomYLoc.floatValue);
var gp = new GravityPoint();
gp.location = loc;
gp.gravity = -240;
p1.addGravityPoint(gp);
p2.addGravityPoint(gp);

// Simulator gets drawn in its own layer
var simulatorLayer = new Layer(desktop.bounds);
var simulator = new Simulator;
compositor.addLayer(simulatorLayer);

simulator.addSimulatorObject(p1);
simulator.addSimulatorObject(p2);

// The time step controls the "fine" detail or smoothness
simulator.timeStep = 0.2;

// The run parameter is the duration of the simulation
simulator.runInLayer(simulatorLayer, 150);

// Bloom
var bloom = new Filter("CIBloom");
bloom.setKeyValue("inputRadius", 80);
bloom.setKeyValue("inputIntensity", 3);

// Blur
var blur = new Filter("CIGaussianBlur");
blur.setKeyValue("inputRadius", 16);
blur.inputFilter = bloom;
simulatorLayer.applyFilter(blur);